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I <br /> . q <br /> Texaco Refining and Marketing Inc. <br /> March 30,1 1989 <br /> 202/150-4,150 <br /> I <br /> i! HAZARD EVALUATION <br /> A re'iew of previous hydrogeological studies, recent water <br /> i <br /> quality data, and existing site conditions indicate that there <br /> are no immediate dangers to life or health (IDLH) conditions (see <br /> Appendix 'C) . The following potential exposures and hazards have <br /> been idenitified: <br /> II <br /> 's <br /> o 1i volatilization of gasoline hydrocarbons during all <br /> operations poses a potential hazard, via the inhalation <br /> of vapors. <br /> I <br /> I <br /> o Skin and eye contact with the impacted soil and water <br /> h may occur during drilling, and soil and groundwater <br /> sampling, as well as when cleaning sampling equipment. <br /> I' <br /> o Atmospheres that contain a level of oxygen greater than <br /> 25% pose an extreme fire hazard (the ambient oxygen <br /> level is approximately 20. 5'x) . This is compounded by <br /> !. the fact that the vapors are flammable. <br /> IN <br /> o Look for falling objects, slipping, and tripping <br /> F <br /> hazards (Visqueen sheet used to hold excavated soil can <br /> k be slippery) . <br /> .a <br /> r <br /> o Be aware that a heat stress situation may develop when <br /> I` impermeable protective clothing is worn. <br /> i° <br />! o iI Limit exposure time to noisy equipment, such as <br /> jackhammers, scrapers, compressors, or vacuum trucks. <br /> The noise level can be as high as 100 dba at the <br /> 1h � <br /> source. <br /> 3 <br /> :t <br /> n <br /> h <br />